Search Results for "ruby-3x3-performance-0d1952fe-df30-4e72-8177-022006450ea6"

Lessons

How to use Enumerable with Ruby Classes

Jun 02, 2025

Enumerable provides a suite of sorting, filtering, iterating functionality to any collection class in Ruby. It's easy to implement and use, so let's see how to use it.

12m

Lazy Requiring Dependencies in Ruby

Feb 03, 2025 Pro

Normally, we require dependencies at the top of files, but today we'll see where and when we might want to lazily require dependencies.

In this screencast, we explore Ruby's Hash#fetch method and how it handles default values. We show how providing a direct default value vs a block affects performance, especially important in Rails apps where unnecessary operations can impact speed.

What is 'it' in Ruby 3.4

Dec 30, 2024

Ruby 3.4 added 'it' to reference a block parameter with no variable name. Let's check it out!

11m

Frozen String Literals in Ruby 3.4

Dec 16, 2024 Pro

Ruby 3.4 now raises warnings anytime you mutate a string literal. Learn how to fix our code and use frozen string literals to improve performance.

18m

Parsing Markdown Code Line Highlighting with Ruby

Dec 09, 2024 Pro

We needed a feature to highlight lines in Markdown code blocks for the Rails guides. This is a fun Ruby challenge with many different solutions.

18m

How to use Omakase Rubocop Linter/Formatter Rules for Rails

Aug 16, 2024

Formatting Ruby code can be a point of contention because the language is so flexible, but it

FILE, dir, and Symlinks

Aug 05, 2024 Pro

Ruby's __FILE__ and __dir__ work slightly differently with symlinks that you might not realize. Let's check see how it works.

14m

Refactoring with Enumerable partition

Jun 10, 2024 Pro

In this lesson, we will look at how to clean up code that iterates over a collection twice to separate the elements out to only doing so once while achieving the same result by leveraging the partition method from Ruby's Enumerable module.

1h 20m

Adding Timeouts to net-ssh with Mike Perham

Jun 03, 2024

In this lesson, we'll dive into some code to add timeouts for an issue with net-ssh with the help of Mike Perham

Limiting & Clamping Values in Ruby

May 27, 2024

Sometimes you need user input to be restricted to a certain range or limited like "greater than zero". While you can do this with conditionals, there are some useful tricks to do this better in Ruby.

16m

Scraping Web Pages with Ruby

Feb 26, 2024 Pro

Kicking off our Web Scraper series, we start out with the bread and butter: scraping web pages with Ruby and Nokogiri.

17m

What's New In Ruby 3.3

Dec 25, 2023

Ruby 3.3.0 was released today and this lesson we're diving into the goodies included in the new version.

37m

Syncing Repositories with Ruby Scripts - Part 2

Dec 25, 2023

In this lesson, we will pick up where we left off in the last part and package up our script into a gem that we can share. Along the way, we'll look at how we can spread responsibility across a few small classes to separate concerns and hopefully make the

33m

Syncing Repositories with Ruby Scripts - Part 1

Dec 18, 2023

In this lesson, we will be looking at getting a v1 of a Ruby script that will fetch, pull, and push across several repositories and remotes to keep our code up-to-date. Hopefully, it will give you ideas for other areas in your workflow where a simple Ruby

Linux Signal Trapping in Ruby

Dec 11, 2023 Pro

Catching signals from the operating system like Ctrl-C can be very useful for safely shutting down your Ruby process. In this lesson, we'll see how the Rails server catches Ctrl-C and gracefully shuts down.

13m

The Behaviors Of Super

Oct 13, 2023 Pro

In this lesson, we will look at the various ways we can use the super keyword in Ruby in regard to forwarding method arguments to the equivalent method in a parent class.

Bundler's New Ruby Version File Option

Aug 18, 2023

Bundler 2.4.19 introduces a new "file:" option for specifying the Ruby version file. This makes it easy for you to have a single point of truth for your Ruby version file.

How to Upgrade Ruby Versions

Apr 05, 2023

Over time, you'll need to upgrade the Ruby version of your Rails application. For example, a new version of Ruby was released since we started this series that fixes a couple security issues in Ruby so we'll teach you how to upgrade your Ruby version.

46m

Classes & Objects in Ruby

Apr 03, 2023

Object oriented programming and Ruby go hand in hand. This lesson, we'll learn how to define classes and create instances of them to organize our code.